Fire-proof double-ventilated flue



(No Model.)

0. P. HALL.

FIRE PROOF DOUBLE VENTILATED FLUB.

No. 440,475. Patented Nov. 11,1890.

WIT/VESSE S: INVENTOR: W I

b and 1).

UNITED STATES PATENT- OFFICE CAREY F. HALL, OF DUNKINSVILLE, OHIO.

Fl RE- PROOF DOU BLE-VENTI LATED FLU E.

SPECIFICATION forming part of Letters Patent No. 440,47 5, dated November 11, 1890.

Application filed May 26,1888, Serial No. 275,263. (No model.)

T0 to whom it may concern:

Be it known that I, CAREY F. HALL, a citizen of the United States, residing at Dunkinsville, in the county of Adams and State of Ohio, have invented an Improved Ventilator, of which the following is a specification.

My invention relates generally to ventilators, and in particular to a ventilating col lar or register surrounding a metallic flue where it passes through a floor, roof, or attic partition.

The object of my invention is to provide a means for ventilating one or more rooms, and also to render a flue as near fire-proof as possible.

iVith these objects in view my invention consists in the peculiar construction and novel combination of the various parts, as will be hereinafter explained.

In the drawings forming a part of this specification, Figure 1 is a vertical section of a flue provided with my improvement, and Fig. 2 is a horizontal section through the flue and ventilator. Fig. 3 is a similar view on line 3 3.

In the drawings, A indicates the flue, which may be of sheet-iron, galvanized iron, or other suitable material. This flue extends from the basement or lower story, whereit is connected with the stove or furnace, out through the roof of the building, and at its upper end is provided with a cowl Ct. Where the flue passes through the floor F or root R an opening 0 is made, sufliciently large to permit the flue A and the insertion of the double ventilator or register B, which encircles the flue where it passes through the floor or roof.

The double ventilator or register 13 consists of two concentric metallic sleeves or collars The outer sleeve 1) encircles the fine and is about four inches larger in diameter than said flue, and at its lower end is provided with inwardly-projecting lugs or legs b the free or inner ends of which are soldered or otherwise secured to the outer side of the flue a suitable distance from the same,

inner sleeve l1 fits within the sleeve 1) and is about two inches less in diameter than said sleeve. The lower end of said sleeve h rests upon the legs 12", and the upper end of said sleeve is provided with a series of outwardlyprojecting lugs or legs 17 which are long enough to reach to the edges of the opening 0, where they rest upona rung O of fire-clay or other iucombustible non-conducting material, which is placed upon the floor around said opening. By this construction two concentric air-passages are formed around the flue, and it is almost impossible to fire the floor or roof where the flue is surrounded by a ventilator or register similar to that described.

A double ventilator B is placed around the flue at each floor, and also where it passes through the roof, and to form a support for the legs b of the sleeve 79 that passes through the root I provide a horizontal ring R or section thereof, which is held in place by means of the brace-rods rsecured to the roof.

A water shed or hood V is secured upon the portion of the flue projecting above the roof directly above the upper end of the ventilator, the purpose of which is to protect the said ventilator from rain, wind,&c. This water shed or hood is essentially conical in shape, being secured at its upper end to the flue, its lower end being expanded to fit over the ventilator, as shown. Ordinary stove-pipes P may be connected with the flue at any point below or above the ventilators.

From the above description it will be seen that I have produced a flue that is cheaper and simpler than a brick or tile flue, and one that always maintains a draft and is always safe against fire.

Having thus described my invention, what I desire to secure by Letters Patent is- 1. The combination, with a fine, of an outer sleeve surrounding the fine and the inwardlyprojecting legs connecting-the lower end of said outer sleeve with the flue, and an inner sleeve surrounding the flue and resting within the outer sleeve and upon the inwardly-projecting legs, the upper end of said inner sleeve being provided with outwardly-projecting ranged and adapted to operate substantially legs projecting" beyond the outer sleeve, subas described. I 10 stantially as shown and described. To which I subscribe my name this 22d day 2. The combination, with the flue of the of May, 1888. 5 outer sleeve having inwardly-projecting legs CAREY F. HALL.

at its lower end, the inner sleeve having out- Attest: wardly-projecting legs at its upper end, and M. A. ROTROFF,

the incombustible non-conducting ring, allar- J. F. ELLISON. 

